Category: Physics

What causes the temp to decrease with height in the mesosphere? Within the mesosphere, temperature decreases with increasing height, due to decreasing absorption of solar radiation by the rarefied atmosphere and increasing cooling by CO2 radiative emission. The top of the mesosphere, called the mesopause, is the coldest part of Earth’s atmosphere. Does temperature increase […]

How long does it take a ball to fall from a roof to the ground 7.0 m below? So it takes barely a second for the ball to hit the ground from that height. How tall is Olaf meme? “Olaf went with Anna and Elsa to the courtyard to greet the citizens, and wait for […]

How may I be of help to you meaning? phrase. If someone or something is of help, they make a situation easier or better. Can I be of help to you? See full dictionary entry for help. How do I say I need help? Writing Skills Tone Tip If there is anything else you need, […]

Which offensive line position is most important? Left Tackle What position gets the most tackles? linebackers What is the lowest paid position in NFL? long snapper position What is the easiest position in football and why? Receiver: 1 The easiest position on offense may be the receiver. He has limited responsibility and most plays may […]

How do plants release oxygen into the air? Plants use photosynthesis to capture carbon dioxide and then release half of it into the atmosphere through respiration. Plants also release oxygen into the atmosphere through photosynthesis. How long does water vapor stay in the atmosphere? A drop of water may spend over 3,000 years in the […]

What force is acting on the football players while they are standing? Normal Force is the force that acts on an object perpendicular to the surface it is resting on. For football, this applies to all players on the field, as the ground is the resting surface, as well as the football when it is […]

What are the two main sources of thermal energy? 1. Describe three ways in which thermal energy is found in nature. Thermal energy is found in the sun (solar energy), below Earth’s surface (geothermal energy), and in fire and other chemical reactions, and decay. What are main sources of heat? Sun is the biggest source […]

What type of reaction is copper II chloride? Copper(II) chloride is a mild oxidant. It decomposes to copper(I) chloride and chlorine gas near 1000 °C: 2 CuCl2 → 2 CuCl + Cl. Copper(II) chloride (CuCl2) reacts with several metals to produce copper metal or copper(I) chloride (CuCl) with oxidation of the other metal. What is […]

Why do we need SI unit? SI unit is an international system of measurements that are used universally in technical and scientific research to avoid the confusion with the units. Having a standard unit system is important because it helps the entire world to understand the measurements in one set of unit system. What is […]

Which two branching connect the trachea to the lungs? At its bottom end, the trachea divides into left and right air tubes called bronchi (BRAHN-kye), which connect to the lungs. Within the lungs, the bronchi branch into smaller bronchi and even smaller tubes called bronchioles (BRAHN-kee-olz). Which two branching tubes connect the trachea to the […]